Introduction
Our pipeline air release valves ensure the reliable elimination of entrapped air within pressurized fluid networks. Manufactured in ductile iron with single and double chamber designs they offer superior performance and actively prevent water hammer. Choose maximum efficiency to safeguard the long-term integrity of your industrial water systems.
Key Features
Single or double chamber design, ultra-high degassing efficiency, effective water hammer prevention, thick protective epoxy coating, safe continuous operation at low and high pressures
Technical Data Table

Applications and Benefits
- Water distribution networks: Prevention of dangerous air pockets and water hammer;
- Irrigation plants: Constant and reliable maintenance of the designed flow rate;
- Optimization of hydraulic efficiency and drastic reduction of energy consumption
Why Choose Our Products
Di Nicola manufacture air vent valves in simple and triple effect , vacuum relief valves and vacuum braker screw in ductile iron alloys EN GJS400 and EN GJS500, electro welded EN S275 J0 carbon steel and stainless steel high in nickel for extreme corrosion from over thirty years with sizes from 40 to 1600 mm and nominal pressures from 2.5 bar to 100 bar . With construction and testing in accordance with EN 1074 and AWWA 512 flanges to EN 1092-2 and ANSI 150 . The company Di Nicola manufacture non-standard air vents on request of customers.
We strongly encourage you to download the product brochure to thoroughly analyze all technical and dimensional specifications. Our engineering team remains at your complete disposal to recommend the most suitable configuration for your specific infrastructure.